What weight of hydrogen at STP could be contained in a vessel that hold 4.8 g of oxygen at STP

Question

What weight of hydrogen at STP could be contained in a vessel that hold 4.8 g of oxygen at STP (A) 4.8 g (B) 3.0 g (C) 0.6 g (D) 0.3 g

Tardigrade Admin · Accepted Answer

According to Avogadro's law, equal volume of all gases under similar conditions of temperature and pressure contain equal number of molecules.
As such
No. of molecules of

H_{2}

= No. of molecules of

O_{2}

\frac{w \times N _{0}}{2} = \frac{4.8 \times N _{0}}{32}

where

N_{0}

= Avogadro's number

(6.02 \times 1 0^{23})

and

ω

= mass of

H_{2}

(in g)

∴ ω = \frac{4.8 \times 2}{32}

= 0.3 g

Q. What weight of hydrogen at STP could be contained in a vessel that hold 4.8 g of oxygen at STP

4.8 g

3.0 g

0.6 g

0.3 g